nx_pattern_emit4.nx

nx_pattern_emit4.nx -- PATTERN EMITTERS: PARSER_KAT (shape 6 of 10) + GOVERNOR (shape 7 of 10). PARSER_KAT: bytes -> value with exact KATs (the claim_extract / stl-parse / registry-scan shape -- the Librarian's own cl_parse_int is this shape). Authored core: skip leading ws, parse the decimal run, -1 = REFUSED (no digit; unsigned parse so -1 is unambiguous). GOVERNOR: rate/pace/backoff over per-host state (the polite_crawl shape). Authored core: allow() = min-gap pacing, backoff() = exponential doubling clamped at a cap. All three knobs (gap/base/cap) are SPEC PARAMS baked from the assignment, not magic numbers in the emitter (rule 11: the spec is the config). Test KATs are COMPUTED BY THE EMITTER from the same params (boundary pairs, clamp). Extends nx_pattern_emit (CAPREG231), emit2 (235), emit3 (241). LAWS: struct-free, integer-only, flat ifs, <=6 args per func (filed >6-stack-args miscompile). license_tier: ORIGINAL